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United States Patent | 5,253,591 |
Rote ,   et al. | October 19, 1993 |
A propulsion and stabilization system for an inductive repulsion type magnetically levitated vehicle which is propelled and suspended by a system which includes dividing the superconducting magnets into two types: a strong field magnet which is located vertically below the vehicle for propulsion and guidance and a weak field superconducting magnet located at the ends of the vehicle for levitation and added guidance. Several proposed embodiments exist for the placement of the magnetic field shielding: locating the shielding on the vehicle, locating the shielding on the guideway, and locating the shielding on the guideway and adding shielding to the vertical undercarriage. In addition, the separation between the vehicle and the guideway can be controlled to reduce the exposure of the passenger cabin to magnetic fields.
Inventors: | Rote; Donald M. (Lagrange, IL); He; Jianliang (Woodridge, IL); Coffey; Howard (Darien, IL) |
Assignee: | The United States of America as represented by the United States (Washington, DC) |
Appl. No.: | 952439 |
Filed: | September 28, 1992 |
Current U.S. Class: | 104/281; 104/139 |
Intern'l Class: | B60L 013/00 |
Field of Search: | 104/281,282,286,139 505/902,903,904,905,906,907,908 |
3664268 | May., 1972 | Lucas et al. | 104/286. |
3892185 | Jul., 1975 | Guderjahn | 104/281. |
Foreign Patent Documents | |||
2312242 | Sep., 1974 | DE | 104/281. |
2429867 | Jan., 1976 | DE | 104/286. |
54-42717 | Apr., 1979 | JP | 104/281. |
62-277004 | Dec., 1987 | JP | 104/281. |
4-88810 | Mar., 1992 | JP | 104/281. |
4-125007 | Apr., 1992 | JP | 104/281. |
Preliminary Design for a Maglev Development Facility, H. T. Coffey et al. Oct. 1991. |